It was thought that the award-winning Sidi Rex Corsa shoe was the pinnacle of recreational boat technology. To this day, Sidi is proud to take the next step in the evolutionary chain: The Vortice. The latest technology, combined with the great skill and craftsmanship of Sidi-based Italian factory technicians, brings together a mix of fresh solutions that meet the driver s desire for safety and comfort. Features Perforated Lorica construction Teflon ventilated net insert Tecno calf tensioner for leg circumference adjustment Tecno Shin and Tensioner Fiberglass reinforced nylon ankle bandage Shock absorbing heel cup Shin plate rocker Fiberglass reinforced nylon toe slider with aluminum insert and air inlet Polyurethane / rubber composite Racing SRS sole This item cannot be shipped to the United States and Canada.